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Proven Construction

The 8TJ167 includes a solid wall main housing to contain the fuel stream and support the mechanical metering assembly.  Stationary components include the inlet flow conditioner, a spring-finger swirl-generator assembly, and two external coils.  Primary moving components, shaft mounted on bearings, include a turbine, impeller and viscous shroud.  Angular momentum is imparted to the fuel by a hetical groove passage bypassing value. 
8TJ167 Mass Fuel Flowmeter

8TJ167 Mass Fuel Flowmeter Datasheet

Application Flexibility

Fuel flowmeters may be tailored to meet specific application needs in the areas of performance, electrical interface, fuel line end-fittings, etc.  the low impedance, digitally compatible output signals provide interface flexibility to one or more displays, indicators, engine monitoring systems and/or other aircraft subsystems.

AMETEK engineering resources and commitment to customer satisfaction provide for fast response to individual requirements and application needs.  Specifications shown herein are typical for the 8TJ167 series flowmeter.

Performance and Test

AMETEK calibrates mass fuel flowmeters to better than +0.5% accuracy of point over typical cruise flow rates.  AMETEK has aggressively developed design improvements to assure performance is maintained over time and temperature.  Through these design improvements and tightened material tolerances, AMETEK has been able to achieve repeatable accuracy, independent of the fuel temperature.

Precise calibration of the fuel flowmeter is easily performed under dynamic conditions while the unit under test is mounted on the flow stand.  To facilitate calibration, zero offset and skew adjustments are external to the drive mechanism and accessible from outside the unit.
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